RE: Cyanotypes

Hi Bob, Ortho lith film is almost as simple to use as paper. You just
have to get the right exposure time, then it's developed under
(approriate) safelight like paper anyway. You just have to be careful
about developer strength and watch it like a hawk in the developer bath
in my experince. Thanks for this, George, I'd forgotten about using it
in-camera!
Cheers
Kate

-----Original Message-----
From: owner-pinhole-discussion@spitbite.org
[mailto:owner-pinhole-discussion@spitbite.org] On Behalf Of Bob
Sent: Friday, 7 January 2005 11:16 p.m.
To: pinhole-discussion@spitbite.org
Subject: Re: [pinhole-discussion] Cyanotypes

George L Smyth wrote:
> Bob -
>
> I have done it, but gave up in favor of using halftone film, which is
> as inexpensive as paper and (IMO) works much better. The exposure
> time will be considerably longer, which is something I did not want
> to deal with since I use a UV unit that I built (which is slower than
> the sun, though consistent). There are ways of stripping the back of
> the paper to compensate for this, but again, I found that ortho simply
> made things a whole lot easier.

I've heard about this pealing of the paper and also waxing and other
methods; always seemed like a fudge to me. I'll have to have a look
around and see if I can get hold of this ortho film stuff, although I
would be a bit worried about processing it and I've never processed
sheet film before.

> The density will need to be akin to what you would be using if you
> were shooting for a grade 0 paper.

So that would be a short contrast range rather than a high range...? Is
there anything you did to achieve that...? I'm not that up on shooting
for a particular density, I just point, shoot and hope for the best
normally.

Cheers,

-- 
Bob                                            http://www.bobarnott.com/
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"Lager is an imitation Continental beer drunk only by refined ladies,
  people with digestive ailments, tourists, and other weaklings."
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